题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104062448-68754.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104062449-87610.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104062449-22073.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104062449-49603.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104062450-65436.png)
A.![]() | B.![]() | C.![]() | D.![]() |
答案
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104062451-38580.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104062451-99962.jpg)
目标函数
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104062451-93566.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104062452-35764.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104062451-38580.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104062452-49036.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104062452-35764.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104062452-76497.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104062452-23152.png)
核心考点
试题【 已知点,,且实数x,y满足不等式组,点为坐标原点,则的最小值是A.B.C.D.】;主要考察你对平面向量数量积的意义等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104062441-50917.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104062441-78172.png)
A.组成锐角三角形 | B.组成直角三角形 |
C.组成钝角三角形 | D.在同一条直线上 |
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104062434-65214.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104062434-93068.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104062434-72431.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104062435-21765.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104062428-31538.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104062428-36543.png)
A.![]() ![]() | B.![]() ![]() |
C.![]() ![]() | D.![]() ![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104062421-96720.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104062422-10490.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104062422-39051.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104062417-34677.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104062417-41266.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104062417-74409.png)
A.-9 | B.0 |
C.9 | D.15 |
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